Description of the process $e^{+}{e}^{-}\to {\pi }^0{\pi }^0\gamma$ in the extended NJL model

The cross section of the process $e^{+}{e}^{-}\to {\pi }^0{\pi }^0\gamma$ is calculated in the extended NJL quark model. The vector channel with the intermediate $\rho$, $\omega$, ${\rho }^{\mathrm{\prime }}$ and ${\omega }^{\mathrm{\prime }}$ mesons is considered. The main contribution is given by the intermediate radially excited ${\rho }^{\mathrm{\prime }}$ meson. The role of the channel with the intermediate scalar meson is also discussed.